$ git clone -n https://src.fedoraproject.org/rpms/grsync.git /var/lib/mock/f45-build-13052-446/root/chroot_tmpdir/scmroot/grsync
Cloning into '/var/lib/mock/f45-build-13052-446/root/chroot_tmpdir/scmroot/grsync'...
$ git fetch origin 5b62c7b92ac035fe8177113bc84630607dc1c2f5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grsync
 * [new ref]         5b62c7b92ac035fe8177113bc84630607dc1c2f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b62c7b drop ix86 support