$ git clone -n https://src.fedoraproject.org/rpms/rust-percent-encoding1.git /var/lib/mock/f41-build-side-1-3134881-39763/root/chroot_tmpdir/scmroot/rust-percent-encoding1
Cloning into '/var/lib/mock/f41-build-side-1-3134881-39763/root/chroot_tmpdir/scmroot/rust-percent-encoding1'...
$ git fetch origin 3112d5ec6c0587dd5323172b4bfa334fdb06dd0d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-percent-encoding1
 * [new ref]         3112d5ec6c0587dd5323172b4bfa334fdb06dd0d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3112d5e compat package no longer needed