$ git clone -n https://src.fedoraproject.org/rpms/centerim.git /var/lib/mock/f40-build-1992447-43599/root/chroot_tmpdir/scmroot/centerim
Cloning into '/var/lib/mock/f40-build-1992447-43599/root/chroot_tmpdir/scmroot/centerim'...
$ git fetch origin 4780612cc7170014f8ef8374241b742ec517c336:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/centerim
 * [new ref]         4780612cc7170014f8ef8374241b742ec517c336 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4780612 Update centerim-c99.patch with -Wreturn-mismatch fix (#2149217)