$ git clone -n https://src.fedoraproject.org/rpms/rust-snafu.git /var/lib/mock/f38-build-side-43-rust-devel-1396884-31052/root/chroot_tmpdir/scmroot/rust-snafu
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1396884-31052/root/chroot_tmpdir/scmroot/rust-snafu'...
$ git fetch origin 2cdce86e063410a9c6dc2ac3d68a071c759456e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-snafu
 * [new ref]         2cdce86e063410a9c6dc2ac3d68a071c759456e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2cdce86 Update to version 0.7.5; Fixes RHBZ#2221522