$ git clone -n https://src.fedoraproject.org/rpms/rust-sval_dynamic.git /var/lib/mock/f40-build-2643730-66490/root/chroot_tmpdir/scmroot/rust-sval_dynamic
Cloning into '/var/lib/mock/f40-build-2643730-66490/root/chroot_tmpdir/scmroot/rust-sval_dynamic'...
$ git fetch origin 5d45372abc6e85120078b022d20d6e619c778aff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sval_dynamic
 * [new ref]         5d45372abc6e85120078b022d20d6e619c778aff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d45372 Update to version 2.11.1; Fixes RHBZ#2256394