$ git clone -n https://src.fedoraproject.org/rpms/rpm.git /var/lib/mock/f39-build-1451353-32809/root/chroot_tmpdir/scmroot/rpm
Cloning into '/var/lib/mock/f39-build-1451353-32809/root/chroot_tmpdir/scmroot/rpm'...
$ git fetch origin c96af978b40746de28693878c28adae99ce4f589:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rpm
 * [new ref]         c96af978b40746de28693878c28adae99ce4f589 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c96af97 Migrate to SPDX license