$ git clone -n https://src.fedoraproject.org/rpms/rust-pin-project.git /var/lib/mock/f40-build-2642794-66472/root/chroot_tmpdir/scmroot/rust-pin-project
Cloning into '/var/lib/mock/f40-build-2642794-66472/root/chroot_tmpdir/scmroot/rust-pin-project'...
$ git fetch origin a07b594af195ca6712404400781ed10fe9b0a2ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pin-project
 * [new ref]         a07b594af195ca6712404400781ed10fe9b0a2ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a07b594 Update to version 1.1.4; Fixes RHBZ#2260362