$ git clone -n https://src.fedoraproject.org/rpms/netgen-mesher.git /var/lib/mock/f41-build-side-1-2821452-33219/root/chroot_tmpdir/scmroot/netgen-mesher
Cloning into '/var/lib/mock/f41-build-side-1-2821452-33219/root/chroot_tmpdir/scmroot/netgen-mesher'...
$ git fetch origin 6637468c658cb7ab0333be9522591e10d9625fd9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/netgen-mesher
 * [new ref]         6637468c658cb7ab0333be9522591e10d9625fd9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6637468 Add netgen-mesher_egg-info-version.patch