$ git clone -n https://src.fedoraproject.org/rpms/rust-im-rc.git /var/lib/mock/f40-build-2652848-66895/root/chroot_tmpdir/scmroot/rust-im-rc
Cloning into '/var/lib/mock/f40-build-2652848-66895/root/chroot_tmpdir/scmroot/rust-im-rc'...
$ git fetch origin fc0cdf687335675a00f53dffa19e1146d01e627a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-im-rc
 * [new ref]         fc0cdf687335675a00f53dffa19e1146d01e627a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc0cdf6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild