$ git clone -n https://src.fedoraproject.org/rpms/rust-fatfs.git /var/lib/mock/f45-build-41591-784/root/chroot_tmpdir/scmroot/rust-fatfs
Cloning into '/var/lib/mock/f45-build-41591-784/root/chroot_tmpdir/scmroot/rust-fatfs'...
$ git fetch origin 7cf57a0eaaf9698945f337121ecfc3040cc23819:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-fatfs
 * [new ref]         7cf57a0eaaf9698945f337121ecfc3040cc23819 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7cf57a0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild