$ git clone -n https://src.fedoraproject.org/rpms/gstreamer1-rtsp-server.git /var/lib/mock/f40-build-2003372-44835/root/chroot_tmpdir/scmroot/gstreamer1-rtsp-server
Cloning into '/var/lib/mock/f40-build-2003372-44835/root/chroot_tmpdir/scmroot/gstreamer1-rtsp-server'...
$ git fetch origin fbecf5e11858483f97b471924be34fe50cfb6f3f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gstreamer1-rtsp-server
 * [new ref]         fbecf5e11858483f97b471924be34fe50cfb6f3f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fbecf5e 1.22.7