$ git clone -n https://src.fedoraproject.org/rpms/rust-vte4-sys.git /var/lib/mock/f45-build-46126-831/root/chroot_tmpdir/scmroot/rust-vte4-sys
Cloning into '/var/lib/mock/f45-build-46126-831/root/chroot_tmpdir/scmroot/rust-vte4-sys'...
$ git fetch origin f4c8eeea7132838489bfab225e0d4b440aaf1423:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-vte4-sys
 * [new ref]         f4c8eeea7132838489bfab225e0d4b440aaf1423 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f4c8eee Update to 0.10.0