diff --git a/mri_concatenate_gcam/testdata.tar.gz b/mri_concatenate_gcam/testdata.tar.gz
index f9147fa2ef4..97b1a2cd74c 120000
--- a/mri_concatenate_gcam/testdata.tar.gz
+++ b/mri_concatenate_gcam/testdata.tar.gz
@@ -1 +1 @@
-../.git/annex/objects/1G/4z/SHA256E-s740258001--4017bf27fc78182b7837c6bd0605fa9aefa5c63dc640d156178d3c798cff5fa3.tar.gz/SHA256E-s740258001--4017bf27fc78182b7837c6bd0605fa9aefa5c63dc640d156178d3c798cff5fa3.tar.gz
\ No newline at end of file
+../.git/annex/objects/Wm/XZ/SHA256E-s4766529--88f506c9f95313ab0bc36ff3ae95ad17ea509fa0914370bbd54c2a1ce2388c25.tar.gz/SHA256E-s4766529--88f506c9f95313ab0bc36ff3ae95ad17ea509fa0914370bbd54c2a1ce2388c25.tar.gz
\ No newline at end of file
diff --git a/mri_mask/test.sh b/mri_mask/test.sh
index 4c9cdadc21d..534a7a6b40a 100755
--- a/mri_mask/test.sh
+++ b/mri_mask/test.sh
@@ -1,6 +1,10 @@
 #!/usr/bin/env bash
 source "$(dirname $0)/../test.sh"
 
+# untaring and taring the large gcam data is time consuming,
+# so don't remove output before each test
+FSTEST_NO_DATA_RESET=1 && init_testdata
+
 # apply mask
 test_command mri_mask nu.1.mgz brainmask.1.mgz mask.mgz
 compare_vol mask.mgz mask.ref.mgz
diff --git a/mri_mask/testdata.tar.gz b/mri_mask/testdata.tar.gz
index 1fecc1ac0b4..9d651be3f45 120000
--- a/mri_mask/testdata.tar.gz
+++ b/mri_mask/testdata.tar.gz
@@ -1 +1 @@
-../.git/annex/objects/65/48/SHA256E-s304741483--875392babb590d1b22c322c8d1038c1f9f7b35468548056c087a1ff7ca677a51.tar.gz/SHA256E-s304741483--875392babb590d1b22c322c8d1038c1f9f7b35468548056c087a1ff7ca677a51.tar.gz
\ No newline at end of file
+../.git/annex/objects/kz/G7/SHA256E-s2437558--c67fee1d1c93954ae739b56a0cdf39253075b3c94e75e29813803400ebec3ccd.tar.gz/SHA256E-s2437558--c67fee1d1c93954ae739b56a0cdf39253075b3c94e75e29813803400ebec3ccd.tar.gz
\ No newline at end of file
diff --git a/mris_transform/test.sh b/mris_transform/test.sh
index ac6a1404c67..544d2e1c38d 100755
--- a/mris_transform/test.sh
+++ b/mris_transform/test.sh
@@ -1,6 +1,9 @@
 #!/usr/bin/env bash
 source "$(dirname $0)/../test.sh"
 
+# untaring is time consuming, so don't remove output before each test
+FSTEST_NO_DATA_RESET=1 && init_testdata
+
 # transform surface with LTA
 test_command mris_transform lh.1.pial 1_to_2.lta lh.out.pial
 compare_surf lh.out.pial lh.ref.pial
@@ -19,12 +22,12 @@ compare_surf lh.out.pial lh.ref.pial
 
 # transform surface with GCAM
 test_command mris_transform --trx-dst nu.2.mgz lh.1.pial 1_to_2.m3z lh.out.pial
-compare_surf lh.out.pial lh.ref.pial
+compare_surf lh.out.pial lh.ref.gcam.pial
 
 # transform surface with inverse GCAM
 test_command mris_transform --trx-dst nu.1.mgz --is-inverse lh.1.pial 2_to_1.m3z lh.out.pial
-compare_surf lh.out.pial lh.ref.pial
+compare_surf lh.out.pial lh.ref.gcam.inv.pial
 
 # just copy surface
 test_command mris_transform lh.1.pial identity.nofile lh.out.pial
-compare_surf lh.out.pial lh.1.pial
\ No newline at end of file
+compare_surf lh.out.pial lh.1.pial
diff --git a/mris_transform/testdata.tar.gz b/mris_transform/testdata.tar.gz
index 6b2d540c12c..442893bab72 120000
--- a/mris_transform/testdata.tar.gz
+++ b/mris_transform/testdata.tar.gz
@@ -1 +1 @@
-../.git/annex/objects/5j/Xj/SHA256E-s489363347--27c6cf0c8c404238b024cc00ae8b50832d10f14dbbd86f6bb85d831c8646cfb0.tar.gz/SHA256E-s489363347--27c6cf0c8c404238b024cc00ae8b50832d10f14dbbd86f6bb85d831c8646cfb0.tar.gz
\ No newline at end of file
+../.git/annex/objects/03/0W/SHA256E-s2717097--b4d70a9294a2b5b21354ce20f24177671214fc3d56d6d02163f11a2d522904d8.tar.gz/SHA256E-s2717097--b4d70a9294a2b5b21354ce20f24177671214fc3d56d6d02163f11a2d522904d8.tar.gz
\ No newline at end of file