$ git clone -n https://src.fedoraproject.org/rpms/gstreamer1-rtsp-server.git /var/lib/mock/f41-build-808259-145751/root/chroot_tmpdir/scmroot/gstreamer1-rtsp-server
Cloning into '/var/lib/mock/f41-build-808259-145751/root/chroot_tmpdir/scmroot/gstreamer1-rtsp-server'...
$ git fetch origin ed4cc8bb6674fc7a19217890cd50637519393348:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gstreamer1-rtsp-server
 * [new ref]         ed4cc8bb6674fc7a19217890cd50637519393348 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ed4cc8b 1.24.3