$ git clone -n https://src.fedoraproject.org/rpms/gst-devtools.git /var/lib/mock/f40-build-791821-137740/root/chroot_tmpdir/scmroot/gst-devtools
Cloning into '/var/lib/mock/f40-build-791821-137740/root/chroot_tmpdir/scmroot/gst-devtools'...
$ git fetch origin d01358c00636a7a27bc0f538740c5639bef550d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gst-devtools
 * [new ref]         d01358c00636a7a27bc0f538740c5639bef550d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d01358c Merge branch 'rawhide' of ssh://pkgs.fedoraproject.org/rpms/gst-devtools into rawhide