$ git clone -n https://src.fedoraproject.org/rpms/rust-proc-mounts0.2.git /var/lib/mock/f38-build-side-43-rust-devel-1421195-31465/root/chroot_tmpdir/scmroot/rust-proc-mounts0.2
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1421195-31465/root/chroot_tmpdir/scmroot/rust-proc-mounts0.2'...
$ git fetch origin d39772c98adf11e7c1a60ff29c7172920cc166aa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-proc-mounts0.2
 * [new ref]         d39772c98adf11e7c1a60ff29c7172920cc166aa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d39772c Initial import (proc-mounts 0.2 compat package)