$ git clone -n https://src.fedoraproject.org/rpms/python-PyMySQL.git /var/lib/mock/f45-build-29218-636/root/chroot_tmpdir/scmroot/python-PyMySQL
Cloning into '/var/lib/mock/f45-build-29218-636/root/chroot_tmpdir/scmroot/python-PyMySQL'...
$ git fetch origin ff1a0b860ee18641bee12aaa73b0c7ebd5613a09:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-PyMySQL
 * [new ref]         ff1a0b860ee18641bee12aaa73b0c7ebd5613a09 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff1a0b8 Update to 1.2.3