$ git clone -n https://src.fedoraproject.org/rpms/rsync-bpc.git /var/lib/mock/f42-build-side-1-3588883-46951/root/chroot_tmpdir/scmroot/rsync-bpc
Cloning into '/var/lib/mock/f42-build-side-1-3588883-46951/root/chroot_tmpdir/scmroot/rsync-bpc'...
$ git fetch origin 56a13d34c1bb43ad068105e8ff035f286ce171cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rsync-bpc
 * [new ref]         56a13d34c1bb43ad068105e8ff035f286ce171cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56a13d3 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild