$ git clone -n https://src.fedoraproject.org/rpms/rust-erased-serde.git /var/lib/mock/f39-build-1445247-32651/root/chroot_tmpdir/scmroot/rust-erased-serde
Cloning into '/var/lib/mock/f39-build-1445247-32651/root/chroot_tmpdir/scmroot/rust-erased-serde'...
$ git fetch origin 76942c65e6317db1c55b264aacc269d05f3a6e38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-erased-serde
 * [new ref]         76942c65e6317db1c55b264aacc269d05f3a6e38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 76942c6 Update to version 0.3.31; Fixes RHBZ#2234354