$ git clone -n https://src.fedoraproject.org/rpms/rust-rpm-sequoia.git /var/lib/mock/f38-build-728413-101215/root/chroot_tmpdir/scmroot/rust-rpm-sequoia
Cloning into '/var/lib/mock/f38-build-728413-101215/root/chroot_tmpdir/scmroot/rust-rpm-sequoia'...
$ git fetch origin b09bf2ac438f2ccf465a06d409cf337d9556eea9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rpm-sequoia
 * [new ref]         b09bf2ac438f2ccf465a06d409cf337d9556eea9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b09bf2a Update to version 1.4.1; Fixes RHBZ#2217961