$ git clone -n https://src.fedoraproject.org/rpms/gearbox.git /var/lib/mock/f40-build-1997426-44134/root/chroot_tmpdir/scmroot/gearbox
Cloning into '/var/lib/mock/f40-build-1997426-44134/root/chroot_tmpdir/scmroot/gearbox'...
$ git fetch origin e0a6f01195e0eac6733c290b59050f65a0b5cebb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gearbox
 * [new ref]         e0a6f01195e0eac6733c290b59050f65a0b5cebb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e0a6f01 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild