$ git clone -n https://gitee.com/pang-qing/cryfs_3.git /var/lib/mock/dist-an23-dde-build-497670-74604/root/chroot_tmpdir/scmroot/cryfs_3
Cloning into '/var/lib/mock/dist-an23-dde-build-497670-74604/root/chroot_tmpdir/scmroot/cryfs_3'...
$ git fetch origin 75c15c18535d32b7d870021c169c02dc37bbccd2:KOJI_FETCH_HEAD
From https://gitee.com/pang-qing/cryfs_3
 * [new ref]         75c15c18535d32b7d870021c169c02dc37bbccd2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75c15c1 rebuild for boost