$ git clone -n https://src.fedoraproject.org/rpms/baobab.git /var/lib/mock/f42-build-side-1-3583687-46890/root/chroot_tmpdir/scmroot/baobab
Cloning into '/var/lib/mock/f42-build-side-1-3583687-46890/root/chroot_tmpdir/scmroot/baobab'...
$ git fetch origin be670fd6628a5e57c06bea0339fad404a343eeee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/baobab
 * [new ref]         be670fd6628a5e57c06bea0339fad404a343eeee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be670fd Merge branch 'rawhide' into f42