$ git clone -n https://src.fedoraproject.org/rpms/python-virtualenv.git /var/lib/mock/f39-build-1512172-35559/root/chroot_tmpdir/scmroot/python-virtualenv
Cloning into '/var/lib/mock/f39-build-1512172-35559/root/chroot_tmpdir/scmroot/python-virtualenv'...
$ git fetch origin 87b1f95664b006ca3385ed667c639cf627733376:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-virtualenv
 * [new ref]         87b1f95664b006ca3385ed667c639cf627733376 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87b1f95 Fix tests with pluggy 1.2.0+