$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-base.git /var/lib/mock/f40-build-2637522-66233/root/chroot_tmpdir/scmroot/rust-gstreamer-base
Cloning into '/var/lib/mock/f40-build-2637522-66233/root/chroot_tmpdir/scmroot/rust-gstreamer-base'...
$ git fetch origin b487c10f28a05dfbd8694cd944f1a45ed3e4e624:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-base
 * [new ref]         b487c10f28a05dfbd8694cd944f1a45ed3e4e624 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b487c10 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild