$ git clone -n https://src.fedoraproject.org/rpms/rust-gdk0.15.git /var/lib/mock/f40-build-2712794-72071/root/chroot_tmpdir/scmroot/rust-gdk0.15
Cloning into '/var/lib/mock/f40-build-2712794-72071/root/chroot_tmpdir/scmroot/rust-gdk0.15'...
$ git fetch origin 9838f7aea41887ab8fa2221da37f55544000df29:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gdk0.15
 * [new ref]         9838f7aea41887ab8fa2221da37f55544000df29 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9838f7a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild