$ git clone -n https://src.fedoraproject.org/rpms/dnf5.git /var/lib/mock/f43-build-side-114769-60978599-6587191/root/chroot_tmpdir/scmroot/dnf5
Cloning into '/var/lib/mock/f43-build-side-114769-60978599-6587191/root/chroot_tmpdir/scmroot/dnf5'...
$ git fetch origin 14aa89f98b19b73178273d6d84e6bb6e5b086c1a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dnf5
 * [new ref]         14aa89f98b19b73178273d6d84e6bb6e5b086c1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 14aa89f Perl 5.42 rebuild