$ git clone -n https://src.fedoraproject.org/rpms/rust-pangocairo-sys0.17.git /var/lib/mock/f41-build-side-1-2810137-32887/root/chroot_tmpdir/scmroot/rust-pangocairo-sys0.17
Cloning into '/var/lib/mock/f41-build-side-1-2810137-32887/root/chroot_tmpdir/scmroot/rust-pangocairo-sys0.17'...
$ git fetch origin e06cd0ff75824f96f057ca028ed49c68e045fca5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pangocairo-sys0.17
 * [new ref]         e06cd0ff75824f96f057ca028ed49c68e045fca5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e06cd0f compat package no longer needed