$ git clone -n https://src.fedoraproject.org/rpms/rust-simd-adler32.git /var/lib/mock/f39-build-1508831-35410/root/chroot_tmpdir/scmroot/rust-simd-adler32
Cloning into '/var/lib/mock/f39-build-1508831-35410/root/chroot_tmpdir/scmroot/rust-simd-adler32'...
$ git fetch origin be63d1ae8e5be3f32de33757523f2a672f76332b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-simd-adler32
 * [new ref]         be63d1ae8e5be3f32de33757523f2a672f76332b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be63d1a Update to version 0.3.7; Fixes RHBZ#2225247