$ git clone -n https://src.fedoraproject.org/rpms/0install.git /var/lib/mock/f41-build-821246-152503/root/chroot_tmpdir/scmroot/0install
Cloning into '/var/lib/mock/f41-build-821246-152503/root/chroot_tmpdir/scmroot/0install'...
$ git fetch origin 7f52957b192653a30594feef1aadaaf72be7cb16:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/0install
 * [new ref]         7f52957b192653a30594feef1aadaaf72be7cb16 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f52957 Version 2.18