$ git clone -n https://src.fedoraproject.org/rpms/gstreamer1.git /var/lib/mock/f41-build-812014-147667/root/chroot_tmpdir/scmroot/gstreamer1
Cloning into '/var/lib/mock/f41-build-812014-147667/root/chroot_tmpdir/scmroot/gstreamer1'...
$ git fetch origin ce1998d5050093b16a22e564629833678abfa84d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gstreamer1
 * [new ref]         ce1998d5050093b16a22e564629833678abfa84d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce1998d 1.24.4