$ git clone -n https://src.fedoraproject.org/rpms/rust-ironrdp-graphics.git /var/lib/mock/f42-build-3263517-41242/root/chroot_tmpdir/scmroot/rust-ironrdp-graphics
Cloning into '/var/lib/mock/f42-build-3263517-41242/root/chroot_tmpdir/scmroot/rust-ironrdp-graphics'...
$ git fetch origin 37efced634c8fa3028bb92d73af6b1896350b8e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ironrdp-graphics
 * [new ref]         37efced634c8fa3028bb92d73af6b1896350b8e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37efced Initial packaging, fixes rhbz#2329151