$ git clone -n https://src.fedoraproject.org/rpms/samurai.git /var/lib/mock/f40-build-746030-112345/root/chroot_tmpdir/scmroot/samurai
Cloning into '/var/lib/mock/f40-build-746030-112345/root/chroot_tmpdir/scmroot/samurai'...
$ git fetch origin a853ad52835981ff244374c9f5f0dc905ccda0ae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/samurai
 * [new ref]         a853ad52835981ff244374c9f5f0dc905ccda0ae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a853ad5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild