$ git clone -n https://src.fedoraproject.org/rpms/rust-rust_decimal.git /var/lib/mock/f40-build-2288187-55773/root/chroot_tmpdir/scmroot/rust-rust_decimal
Cloning into '/var/lib/mock/f40-build-2288187-55773/root/chroot_tmpdir/scmroot/rust-rust_decimal'...
$ git fetch origin 52c8f3e79909409fbcaec61f86e46988a4e2fcb2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rust_decimal
 * [new ref]         52c8f3e79909409fbcaec61f86e46988a4e2fcb2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52c8f3e Update to version 1.33.1; Fixes RHBZ#2249575