$ git clone -n https://src.fedoraproject.org/rpms/golang-github-invopop-yaml.git /var/lib/mock/f45-build-12075-437/root/chroot_tmpdir/scmroot/golang-github-invopop-yaml
Cloning into '/var/lib/mock/f45-build-12075-437/root/chroot_tmpdir/scmroot/golang-github-invopop-yaml'...
$ git fetch origin ce10a1c90ca5e3810540bef55b646d030465d999:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-invopop-yaml
 * [new ref]         ce10a1c90ca5e3810540bef55b646d030465d999 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce10a1c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild