$ git clone -n https://src.fedoraproject.org/rpms/copr-frontend.git /var/lib/mock/f39-build-1664991-40732/root/chroot_tmpdir/scmroot/copr-frontend
Cloning into '/var/lib/mock/f39-build-1664991-40732/root/chroot_tmpdir/scmroot/copr-frontend'...
$ git fetch origin ba7bc93fda2da9d8488cc310375e6762e9de8e12:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/copr-frontend
 * [new ref]         ba7bc93fda2da9d8488cc310375e6762e9de8e12 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba7bc93 Update copr-frontend to 1.201-1