$ git clone -n https://src.fedoraproject.org/rpms/python-copr-common.git /var/lib/mock/f45-build-30130-643/root/chroot_tmpdir/scmroot/python-copr-common
Cloning into '/var/lib/mock/f45-build-30130-643/root/chroot_tmpdir/scmroot/python-copr-common'...
$ git fetch origin 013cfc7d57d99bab81911baab13c1ac4c1941820:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-copr-common
 * [new ref]         013cfc7d57d99bab81911baab13c1ac4c1941820 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 013cfc7 Update python-copr-common to 1.9-1