$ git clone -n https://src.fedoraproject.org/rpms/httpd.git /var/lib/mock/f42-build-867443-175505/root/chroot_tmpdir/scmroot/httpd
Cloning into '/var/lib/mock/f42-build-867443-175505/root/chroot_tmpdir/scmroot/httpd'...
$ git fetch origin 5bc2bd77739ef948c9b8cd733e955f1da254fd7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/httpd
 * [new ref]         5bc2bd77739ef948c9b8cd733e955f1da254fd7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5bc2bd7 Rebuilt for the bin-sbin merge (2nd attempt)