$ git clone -n https://src.fedoraproject.org/rpms/rust-pangocairo.git /var/lib/mock/f42-build-side-1-3586561-46923/root/chroot_tmpdir/scmroot/rust-pangocairo
Cloning into '/var/lib/mock/f42-build-side-1-3586561-46923/root/chroot_tmpdir/scmroot/rust-pangocairo'...
$ git fetch origin fc192e1e5b7ba17706795077284f035e6b0763ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pangocairo
 * [new ref]         fc192e1e5b7ba17706795077284f035e6b0763ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc192e1 Update to version 0.20.10; Fixes RHBZ#2365878