$ git clone -n https://src.fedoraproject.org/rpms/rust-percent-encoding.git /var/lib/mock/f45-build-43792-805/root/chroot_tmpdir/scmroot/rust-percent-encoding
Cloning into '/var/lib/mock/f45-build-43792-805/root/chroot_tmpdir/scmroot/rust-percent-encoding'...
$ git fetch origin b8aab3c0c4c1c95be9c8a271179004dd797d3a16:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-percent-encoding
 * [new ref]         b8aab3c0c4c1c95be9c8a271179004dd797d3a16 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8aab3c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild