$ git clone -n https://src.fedoraproject.org/rpms/rust-mockall_derive.git /var/lib/mock/f38-build-side-43-rust-devel-1417458-31459/root/chroot_tmpdir/scmroot/rust-mockall_derive
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1417458-31459/root/chroot_tmpdir/scmroot/rust-mockall_derive'...
$ git fetch origin f6009ab403d2c096649e5d682ea057c9734666e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-mockall_derive
 * [new ref]         f6009ab403d2c096649e5d682ea057c9734666e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6009ab Update to version 0.11.4; Fixes RHBZ#2181905