$ git clone -n https://src.fedoraproject.org/rpms/libgdl.git /var/lib/mock/f41-build-851215-165860/root/chroot_tmpdir/scmroot/libgdl
Cloning into '/var/lib/mock/f41-build-851215-165860/root/chroot_tmpdir/scmroot/libgdl'...
$ git fetch origin 7974d77873ddef53e90fa8d722d58660a55ba282:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libgdl
 * [new ref]         7974d77873ddef53e90fa8d722d58660a55ba282 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7974d77 Fix building against libxml2 2.12.0