$ git clone -n https://src.fedoraproject.org/rpms/tremulous.git /var/lib/mock/f39-build-1671698-40866/root/chroot_tmpdir/scmroot/tremulous
Cloning into '/var/lib/mock/f39-build-1671698-40866/root/chroot_tmpdir/scmroot/tremulous'...
$ git fetch origin c55040ce6613a4307de5164b4ef105ae6ba36c96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tremulous
 * [new ref]         c55040ce6613a4307de5164b4ef105ae6ba36c96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c55040c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild