$ git clone -n https://src.fedoraproject.org/rpms/python-libsass.git /var/lib/mock/f40-build-2059223-49155/root/chroot_tmpdir/scmroot/python-libsass
Cloning into '/var/lib/mock/f40-build-2059223-49155/root/chroot_tmpdir/scmroot/python-libsass'...
$ git fetch origin 27bf690c622471a2c3cf6a7ee241def5506ac43a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-libsass
 * [new ref]         27bf690c622471a2c3cf6a7ee241def5506ac43a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 27bf690 Improve the source URL and archive name