$ git clone -n https://src.fedoraproject.org/rpms/rust-reflink-copy.git /var/lib/mock/f45-build-44411-813/root/chroot_tmpdir/scmroot/rust-reflink-copy
Cloning into '/var/lib/mock/f45-build-44411-813/root/chroot_tmpdir/scmroot/rust-reflink-copy'...
$ git fetch origin 068367297d40992614ed82c80b0bf8bc968e9888:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-reflink-copy
 * [new ref]         068367297d40992614ed82c80b0bf8bc968e9888 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0683672 Simplify .gitignore