$ git clone -n https://src.fedoraproject.org/rpms/golang-modernc-ccgo-4.git /var/lib/mock/f45-build-12677-443/root/chroot_tmpdir/scmroot/golang-modernc-ccgo-4
Cloning into '/var/lib/mock/f45-build-12677-443/root/chroot_tmpdir/scmroot/golang-modernc-ccgo-4'...
$ git fetch origin c98bce2bd2e9bbc55f61efe5f00fc089e670c2d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-modernc-ccgo-4
 * [new ref]         c98bce2bd2e9bbc55f61efe5f00fc089e670c2d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c98bce2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild