$ git clone -n https://src.fedoraproject.org/rpms/golang-modernc-fileutil.git /var/lib/mock/f45-build-12669-443/root/chroot_tmpdir/scmroot/golang-modernc-fileutil
Cloning into '/var/lib/mock/f45-build-12669-443/root/chroot_tmpdir/scmroot/golang-modernc-fileutil'...
$ git fetch origin 0da8a403c3a469b526334e225d71f931171d73a1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-modernc-fileutil
 * [new ref]         0da8a403c3a469b526334e225d71f931171d73a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0da8a40 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild