$ git clone -n https://src.fedoraproject.org/rpms/rust-derive_more.git /var/lib/mock/f41-build-side-1-2907230-34727/root/chroot_tmpdir/scmroot/rust-derive_more
Cloning into '/var/lib/mock/f41-build-side-1-2907230-34727/root/chroot_tmpdir/scmroot/rust-derive_more'...
$ git fetch origin 469b275602ee7140a215d67cbcfb0b1c10116fc0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-derive_more
 * [new ref]         469b275602ee7140a215d67cbcfb0b1c10116fc0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 469b275 Update to version 1.0.0; Fixes RHBZ#2303544