$ git clone -n https://src.fedoraproject.org/rpms/rust-libslirp.git /var/lib/mock/f39-build-2204603-51962/root/chroot_tmpdir/scmroot/rust-libslirp
Cloning into '/var/lib/mock/f39-build-2204603-51962/root/chroot_tmpdir/scmroot/rust-libslirp'...
$ git fetch origin 84683a5c48e38c4d6267406cda3b8a7da4066804:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libslirp
 * [new ref]         84683a5c48e38c4d6267406cda3b8a7da4066804 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84683a5 Bump libsystemd dependency to <0.8