$ git clone -n https://src.fedoraproject.org/rpms/rust-remove_dir_all0.7.git /var/lib/mock/f40-build-2233823-53385/root/chroot_tmpdir/scmroot/rust-remove_dir_all0.7
Cloning into '/var/lib/mock/f40-build-2233823-53385/root/chroot_tmpdir/scmroot/rust-remove_dir_all0.7'...
$ git fetch origin 4072f86a92324e6ac88a0594d33803e6226bf68b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-remove_dir_all0.7
 * [new ref]         4072f86a92324e6ac88a0594d33803e6226bf68b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4072f86 Initial import (remove_dir_all 0.7 compat package)