$ git clone -n https://src.fedoraproject.org/rpms/orc.git /var/lib/mock/f45-build-21179-580/root/chroot_tmpdir/scmroot/orc
Cloning into '/var/lib/mock/f45-build-21179-580/root/chroot_tmpdir/scmroot/orc'...
$ git fetch origin 1a199937d809bf2eca668bcd5d0c6bce72b8291d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/orc
 * [new ref]         1a199937d809bf2eca668bcd5d0c6bce72b8291d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a19993 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild