$ git clone -n https://src.fedoraproject.org/rpms/rust-graphene-sys.git /var/lib/mock/f42-build-side-1-3586528-46923/root/chroot_tmpdir/scmroot/rust-graphene-sys
Cloning into '/var/lib/mock/f42-build-side-1-3586528-46923/root/chroot_tmpdir/scmroot/rust-graphene-sys'...
$ git fetch origin 7d640027e0510d1586b5efd5c2acb711eb3ce966:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-graphene-sys
 * [new ref]         7d640027e0510d1586b5efd5c2acb711eb3ce966 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d64002 Update to version 0.20.10; Fixes RHBZ#2365835