$ git clone -n https://src.fedoraproject.org/rpms/rust-pangocairo-sys0.16.git /var/lib/mock/f38-build-side-43-rust-devel-1414215-31447/root/chroot_tmpdir/scmroot/rust-pangocairo-sys0.16
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1414215-31447/root/chroot_tmpdir/scmroot/rust-pangocairo-sys0.16'...
$ git fetch origin 5952e38d46e55bc2a0a06cbe61d3c2670eb11baf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pangocairo-sys0.16
 * [new ref]         5952e38d46e55bc2a0a06cbe61d3c2670eb11baf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5952e38 Initial import (pangocairo-sys 0.16 compat package)