$ git clone -n https://src.fedoraproject.org/rpms/mygnuhealth.git /var/lib/mock/f39-build-1769637-41501/root/chroot_tmpdir/scmroot/mygnuhealth
Cloning into '/var/lib/mock/f39-build-1769637-41501/root/chroot_tmpdir/scmroot/mygnuhealth'...
$ git fetch origin c713a4919a6d2b27507ade7d0a2062b72905eea5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mygnuhealth
 * [new ref]         c713a4919a6d2b27507ade7d0a2062b72905eea5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c713a49 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild