$ git clone -n https://src.fedoraproject.org/rpms/rust-remoteprocess.git /var/lib/mock/f39-build-1972814-43327/root/chroot_tmpdir/scmroot/rust-remoteprocess
Cloning into '/var/lib/mock/f39-build-1972814-43327/root/chroot_tmpdir/scmroot/rust-remoteprocess'...
$ git fetch origin e2e51968f8d488799dd428626399dcc6bfae67da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-remoteprocess
 * [new ref]         e2e51968f8d488799dd428626399dcc6bfae67da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e2e5196 Update to version 0.4.13; Fixes RHBZ#2213640