$ git clone -n https://src.fedoraproject.org/rpms/rust-rust_decimal.git /var/lib/mock/f42-build-side-1-3536481-46558/root/chroot_tmpdir/scmroot/rust-rust_decimal
Cloning into '/var/lib/mock/f42-build-side-1-3536481-46558/root/chroot_tmpdir/scmroot/rust-rust_decimal'...
$ git fetch origin 22214ba16a5e86676c3d96185410849ee6d500fe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rust_decimal
 * [new ref]         22214ba16a5e86676c3d96185410849ee6d500fe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22214ba Update to version 1.37.1; Fixes RHBZ#2353046