$ git clone -n https://src.fedoraproject.org/rpms/restic.git /var/lib/mock/f42-build-867068-174622/root/chroot_tmpdir/scmroot/restic
Cloning into '/var/lib/mock/f42-build-867068-174622/root/chroot_tmpdir/scmroot/restic'...
$ git fetch origin 6bcdf0b9d319409b3d1f453563d47d57a0f917f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/restic
 * [new ref]         6bcdf0b9d319409b3d1f453563d47d57a0f917f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6bcdf0b Update to 0.17.3 - Closes rhbz#2310352