$ git clone -n https://src.fedoraproject.org/rpms/rust-err-derive.git /var/lib/mock/f41-build-side-1-2757882-31477/root/chroot_tmpdir/scmroot/rust-err-derive
Cloning into '/var/lib/mock/f41-build-side-1-2757882-31477/root/chroot_tmpdir/scmroot/rust-err-derive'...
$ git fetch origin 61c6accf39616f5195dbcb45789ecca0e2ef6f1a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-err-derive
 * [new ref]         61c6accf39616f5195dbcb45789ecca0e2ef6f1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 61c6acc Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild