$ git clone -n https://src.fedoraproject.org/rpms/rcssserver.git /var/lib/mock/f40-build-751856-116376/root/chroot_tmpdir/scmroot/rcssserver
Cloning into '/var/lib/mock/f40-build-751856-116376/root/chroot_tmpdir/scmroot/rcssserver'...
$ git fetch origin 2373ac89f1d364653a0bdfa1e33baa9bad9f1d83:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rcssserver
 * [new ref]         2373ac89f1d364653a0bdfa1e33baa9bad9f1d83 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2373ac8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild