$ git clone -n https://src.fedoraproject.org/rpms/ftgl.git /var/lib/mock/f40-build-797228-141191/root/chroot_tmpdir/scmroot/ftgl
Cloning into '/var/lib/mock/f40-build-797228-141191/root/chroot_tmpdir/scmroot/ftgl'...
$ git fetch origin af25a8d155e03bc3278b62dc4d0191102adb77b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ftgl
 * [new ref]         af25a8d155e03bc3278b62dc4d0191102adb77b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at af25a8d Bump changelog