$ git clone -n https://src.fedoraproject.org/rpms/perl-Tie-Hash-MultiValue.git /var/lib/mock/f45-build-27187-621/root/chroot_tmpdir/scmroot/perl-Tie-Hash-MultiValue
Cloning into '/var/lib/mock/f45-build-27187-621/root/chroot_tmpdir/scmroot/perl-Tie-Hash-MultiValue'...
$ git fetch origin 7ac846f441d5522e0fe55575a1840c0ef144d820:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Tie-Hash-MultiValue
 * [new ref]         7ac846f441d5522e0fe55575a1840c0ef144d820 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ac846f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild