$ git clone -n https://src.fedoraproject.org/rpms/rust-directories-next.git /var/lib/mock/f39-build-1516999-35672/root/chroot_tmpdir/scmroot/rust-directories-next
Cloning into '/var/lib/mock/f39-build-1516999-35672/root/chroot_tmpdir/scmroot/rust-directories-next'...
$ git fetch origin f906a2fcc10826bb49f993ce5d22929123e39bf0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-directories-next
 * [new ref]         f906a2fcc10826bb49f993ce5d22929123e39bf0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f906a2f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild