$ git clone -n https://src.fedoraproject.org/rpms/golang-github-google-cmp.git /var/lib/mock/f45-build-12019-437/root/chroot_tmpdir/scmroot/golang-github-google-cmp
Cloning into '/var/lib/mock/f45-build-12019-437/root/chroot_tmpdir/scmroot/golang-github-google-cmp'...
$ git fetch origin 59dbdede1b970066600d75fcfa1c45608c144f65:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-google-cmp
 * [new ref]         59dbdede1b970066600d75fcfa1c45608c144f65 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59dbded Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild