$ git clone -n https://src.fedoraproject.org/rpms/rust-percent-encoding.git /var/lib/mock/f40-build-2326510-58834/root/chroot_tmpdir/scmroot/rust-percent-encoding
Cloning into '/var/lib/mock/f40-build-2326510-58834/root/chroot_tmpdir/scmroot/rust-percent-encoding'...
$ git fetch origin bc356fbda40b0548928d7af5f237e0f0e01aaaf1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-percent-encoding
 * [new ref]         bc356fbda40b0548928d7af5f237e0f0e01aaaf1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc356fb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild