$ git clone -n https://src.fedoraproject.org/rpms/python-copr-common.git /var/lib/mock/f39-build-1754240-41470/root/chroot_tmpdir/scmroot/python-copr-common
Cloning into '/var/lib/mock/f39-build-1754240-41470/root/chroot_tmpdir/scmroot/python-copr-common'...
$ git fetch origin dcb19a37dd165df3f7e5ce83ccd6ccf699223ee6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-copr-common
 * [new ref]         dcb19a37dd165df3f7e5ce83ccd6ccf699223ee6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dcb19a3 Update python-copr-common to 0.20-1