$ git clone -n https://src.fedoraproject.org/rpms/perl-Tie-Hash-ReadonlyStack.git /var/lib/mock/f45-build-27160-621/root/chroot_tmpdir/scmroot/perl-Tie-Hash-ReadonlyStack
Cloning into '/var/lib/mock/f45-build-27160-621/root/chroot_tmpdir/scmroot/perl-Tie-Hash-ReadonlyStack'...
$ git fetch origin cee8df217d648b21c3bc661597f8e5ee8bee5979:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Tie-Hash-ReadonlyStack
 * [new ref]         cee8df217d648b21c3bc661597f8e5ee8bee5979 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cee8df2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild