$ git clone -n https://src.fedoraproject.org/rpms/legendary.git /var/lib/mock/f39-build-1489955-34502/root/chroot_tmpdir/scmroot/legendary
Cloning into '/var/lib/mock/f39-build-1489955-34502/root/chroot_tmpdir/scmroot/legendary'...
$ git fetch origin 09ddc2903548ae956d63b91daeb76295329bcd37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/legendary
 * [new ref]         09ddc2903548ae956d63b91daeb76295329bcd37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 09ddc29 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild