$ git clone -n https://src.fedoraproject.org/rpms/gstreamer1-rtsp-server.git /var/lib/mock/eln-build-side-110820-59104610-6571129/root/chroot_tmpdir/scmroot/gstreamer1-rtsp-server
Cloning into '/var/lib/mock/eln-build-side-110820-59104610-6571129/root/chroot_tmpdir/scmroot/gstreamer1-rtsp-server'...
$ git fetch origin e150aaf29d02baf9db44c51337eb055bbd894ddf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gstreamer1-rtsp-server
 * [new ref]         e150aaf29d02baf9db44c51337eb055bbd894ddf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e150aaf 1.26.1