$ git clone -n https://src.fedoraproject.org/rpms/rust-app_dirs.git /var/lib/mock/f45-build-40082-767/root/chroot_tmpdir/scmroot/rust-app_dirs
Cloning into '/var/lib/mock/f45-build-40082-767/root/chroot_tmpdir/scmroot/rust-app_dirs'...
$ git fetch origin 68534a3ccea1034dc58b27c492b7fe122b2e7d0e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-app_dirs
 * [new ref]         68534a3ccea1034dc58b27c492b7fe122b2e7d0e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68534a3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild