$ git clone -n https://src.fedoraproject.org/rpms/rust-cairo-sys-rs.git /var/lib/mock/f40-build-2640068-66387/root/chroot_tmpdir/scmroot/rust-cairo-sys-rs
Cloning into '/var/lib/mock/f40-build-2640068-66387/root/chroot_tmpdir/scmroot/rust-cairo-sys-rs'...
$ git fetch origin 78886fd6b4392d87a600fba8bd9759b8c2d68cc5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cairo-sys-rs
 * [new ref]         78886fd6b4392d87a600fba8bd9759b8c2d68cc5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 78886fd Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild