$ git clone -n https://src.fedoraproject.org/rpms/kdf.git /var/lib/mock/f40-build-2357164-60307/root/chroot_tmpdir/scmroot/kdf
Cloning into '/var/lib/mock/f40-build-2357164-60307/root/chroot_tmpdir/scmroot/kdf'...
$ git fetch origin 75f2b40b360e46c5d601c1dca2484695d078c6cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdf
 * [new ref]         75f2b40b360e46c5d601c1dca2484695d078c6cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75f2b40 24.01.95