$ git clone -n https://src.fedoraproject.org/rpms/qbrew.git /var/lib/mock/f39-build-1499125-34743/root/chroot_tmpdir/scmroot/qbrew
Cloning into '/var/lib/mock/f39-build-1499125-34743/root/chroot_tmpdir/scmroot/qbrew'...
$ git fetch origin ce5eb3b88b20104484c2d0b5db3c04cb923d6b18:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qbrew
 * [new ref]         ce5eb3b88b20104484c2d0b5db3c04cb923d6b18 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce5eb3b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild