$ git clone -n https://src.fedoraproject.org/rpms/rust-sequoia-sq.git /var/lib/mock/f41-build-835662-158617/root/chroot_tmpdir/scmroot/rust-sequoia-sq
Cloning into '/var/lib/mock/f41-build-835662-158617/root/chroot_tmpdir/scmroot/rust-sequoia-sq'...
$ git fetch origin 9b93f3e6816bf46956efd4e53b9853a5d40b59f0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sequoia-sq
 * [new ref]         9b93f3e6816bf46956efd4e53b9853a5d40b59f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b93f3e Rebuild for sequoia-openpgp 1.21.1