$ git clone -n https://src.fedoraproject.org/rpms/OliveTin.git /var/lib/mock/f39-build-1508344-35366/root/chroot_tmpdir/scmroot/OliveTin
Cloning into '/var/lib/mock/f39-build-1508344-35366/root/chroot_tmpdir/scmroot/OliveTin'...
$ git fetch origin c24333ebe4cad22c1e9eea0b5fdc43a97e2157a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/OliveTin
 * [new ref]         c24333ebe4cad22c1e9eea0b5fdc43a97e2157a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c24333e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild