$ git clone -n https://src.fedoraproject.org/rpms/rust-uefi-run.git /var/lib/mock/f40-build-2116687-50716/root/chroot_tmpdir/scmroot/rust-uefi-run
Cloning into '/var/lib/mock/f40-build-2116687-50716/root/chroot_tmpdir/scmroot/rust-uefi-run'...
$ git fetch origin 3f9376e9e74c79ec6a3a9290a473ef5480b7c58d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uefi-run
 * [new ref]         3f9376e9e74c79ec6a3a9290a473ef5480b7c58d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f9376e Update to version 0.6.1; Fixes RHBZ#2155924