$ git clone -n https://src.fedoraproject.org/rpms/rust-grep-printer.git /var/lib/mock/f40-build-2100699-50481/root/chroot_tmpdir/scmroot/rust-grep-printer
Cloning into '/var/lib/mock/f40-build-2100699-50481/root/chroot_tmpdir/scmroot/rust-grep-printer'...
$ git fetch origin c96940770f32af9c5078d7bc033886a72d6e16dd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-grep-printer
 * [new ref]         c96940770f32af9c5078d7bc033886a72d6e16dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c969407 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild