$ git clone -n https://src.fedoraproject.org/rpms/rust-pest_derive.git /var/lib/mock/f38-build-side-43-rust-devel-1398700-31114/root/chroot_tmpdir/scmroot/rust-pest_derive
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1398700-31114/root/chroot_tmpdir/scmroot/rust-pest_derive'...
$ git fetch origin 50070d98df445a7f7392b127f6852b54c4e0c766:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pest_derive
 * [new ref]         50070d98df445a7f7392b127f6852b54c4e0c766 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 50070d9 Update to version 2.7.3; Fixes RHBZ#2236146