$ git clone -n https://src.fedoraproject.org/rpms/redhat-rpm-config.git /var/lib/mock/f44-build-14-5/root/chroot_tmpdir/scmroot/redhat-rpm-config
Cloning into '/var/lib/mock/f44-build-14-5/root/chroot_tmpdir/scmroot/redhat-rpm-config'...
$ git fetch origin d1f1774436fb69293535a8b2a394a336b58c4884:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/redhat-rpm-config
 * [new ref]         d1f1774436fb69293535a8b2a394a336b58c4884 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d1f1774 Add gnome-srpm-macros to the default buildroot