$ git clone -n https://src.fedoraproject.org/rpms/rust-gobject-sys0.15.git /var/lib/mock/f40-build-2713162-72118/root/chroot_tmpdir/scmroot/rust-gobject-sys0.15
Cloning into '/var/lib/mock/f40-build-2713162-72118/root/chroot_tmpdir/scmroot/rust-gobject-sys0.15'...
$ git fetch origin 290ce6aed247fb3b9cf95670e887d18df0a6b619:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gobject-sys0.15
 * [new ref]         290ce6aed247fb3b9cf95670e887d18df0a6b619 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 290ce6a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild