$ git clone -n https://src.fedoraproject.org/rpms/python-nose2.git /var/lib/mock/f45-build-31748-655/root/chroot_tmpdir/scmroot/python-nose2
Cloning into '/var/lib/mock/f45-build-31748-655/root/chroot_tmpdir/scmroot/python-nose2'...
$ git fetch origin 7bceeef9ce921fa25c2abf0fcbedd821efb02852:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-nose2
 * [new ref]         7bceeef9ce921fa25c2abf0fcbedd821efb02852 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7bceeef Simplify .gitignore