$ git clone -n https://src.fedoraproject.org/rpms/rust-sval_fmt.git /var/lib/mock/f41-build-side-1-3129170-39576/root/chroot_tmpdir/scmroot/rust-sval_fmt
Cloning into '/var/lib/mock/f41-build-side-1-3129170-39576/root/chroot_tmpdir/scmroot/rust-sval_fmt'...
$ git fetch origin 8eaf800e8cbe5ec07bc0de195042efb7f0ab52a0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sval_fmt
 * [new ref]         8eaf800e8cbe5ec07bc0de195042efb7f0ab52a0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8eaf800 no longer needed