$ git clone -n https://src.fedoraproject.org/rpms/golang-modernc-ebnfutil.git /var/lib/mock/f45-build-12675-443/root/chroot_tmpdir/scmroot/golang-modernc-ebnfutil
Cloning into '/var/lib/mock/f45-build-12675-443/root/chroot_tmpdir/scmroot/golang-modernc-ebnfutil'...
$ git fetch origin ef309ac1b789f7168f0535f2f6c87289b66d2918:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-modernc-ebnfutil
 * [new ref]         ef309ac1b789f7168f0535f2f6c87289b66d2918 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef309ac Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild