$ git clone -n https://src.fedoraproject.org/rpms/rust-home.git /var/lib/mock/f39-build-1493710-34539/root/chroot_tmpdir/scmroot/rust-home
Cloning into '/var/lib/mock/f39-build-1493710-34539/root/chroot_tmpdir/scmroot/rust-home'...
$ git fetch origin 633155dc4b51f44ea5cb6ae591a5577e3690ced8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-home
 * [new ref]         633155dc4b51f44ea5cb6ae591a5577e3690ced8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 633155d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild