$ git clone -n https://src.fedoraproject.org/rpms/perl-HTML-BarGraph.git /var/lib/mock/f45-build-23852-599/root/chroot_tmpdir/scmroot/perl-HTML-BarGraph
Cloning into '/var/lib/mock/f45-build-23852-599/root/chroot_tmpdir/scmroot/perl-HTML-BarGraph'...
$ git fetch origin 424bb2a2819e635ecb0217712d76a83728793fc5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-HTML-BarGraph
 * [new ref]         424bb2a2819e635ecb0217712d76a83728793fc5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 424bb2a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild