$ git clone -n https://src.fedoraproject.org/rpms/python-paste-script.git /var/lib/mock/f39-build-1603707-38581/root/chroot_tmpdir/scmroot/python-paste-script
Cloning into '/var/lib/mock/f39-build-1603707-38581/root/chroot_tmpdir/scmroot/python-paste-script'...
$ git fetch origin bbee4f1041be0f7b0022427ff98090e87984900d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-paste-script
 * [new ref]         bbee4f1041be0f7b0022427ff98090e87984900d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bbee4f1 update to 3.3.0, modernize spec, drop python2