$ git clone -n https://src.fedoraproject.org/rpms/gstreamer1.git /var/lib/mock/f41-build-808241-145745/root/chroot_tmpdir/scmroot/gstreamer1
Cloning into '/var/lib/mock/f41-build-808241-145745/root/chroot_tmpdir/scmroot/gstreamer1'...
$ git fetch origin f7bba56d63c171b88b8d02fbdc894aaf866306ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gstreamer1
 * [new ref]         f7bba56d63c171b88b8d02fbdc894aaf866306ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7bba56 1.24.3